For the free version of MX Player, the path is similar but with com.mxtech.videoplayer.ad (the exact name may vary slightly). You will need a robust file manager that can access the Android/data directory on your device, which may require additional permissions on newer Android versions.
Move the zip file directly to the root directory of your internal storage or directly into the main Download folder, as deeply nested folders can sometimes cause permission blocks on newer Android versions. Audio is Still Not Playing
The fixes this problem. This guide explains what this codec is, why you need it, and how to install it safely. What is the 1.49.0 Armv8 Neon Codec?
Download either the specific (for Armv8) or the mx_aio.zip (All-In-One pack, which automatically detects your processor architecture).
It solves audio codec issues, boosts 4K playback fluidity, and saves your battery life.
Use this table for future reference:
To enable hardware-accelerated decoding of additional video and audio formats not natively supported by MX Player on 64-bit Android devices (SDM845, Dimensity, Exynos, Tensor chipsets).